Move It: Make Friday green by walking or rolling to work

BILLY CALZADA/SAN ANTONIO EXPRESS-NEWS

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Sylvia Cortez, an employee of the City of San Antonio Development Services, stands with others in Main Plaza after riding her bike to work for the Walk & Roll to Work Rally. The event was an effort to encourage healthier lifestyles and alternative forms of transportation. May 20, 2011. BILLY CALZADA / gcalzada@express-news.net

Sylvia Cortez, an employee of the City of San Antonio Development Services, stands with others in Main Plaza after riding her bike to work for the Walk & Roll to Work Rally. The event was an effort to encourage healthier lifestyles and alternative forms of transportation. May 20, 2011. BILLY CALZADA / gcalzada@express-news.net